Cobalt Drill

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What's the best drill bit?

I need to know what is the best drill bit to drill a hole in a bolt that broke off on my truck engine so can take it out with an easy out. I'm using a high speed Dremal drill with a cobalt drill bit and it's not doning anything. Just don't know what to do now. Thanks

It needs to turn slow, using a drill or Dremal that turns fast will not do anything except dull the drill bit. Use a small drill bit to start a "pilot hole" and move up to the next size, then another size. Keep doing this until you get to the size of the easy out. Don't apply a lot of pressure with the small drill bit because you will break the bit. I use cheap drill bits alot because they are always dulling, so it doesn't matter what brand of bits you use, it's all in the method of your drilling. So buy or borrow a regular brill and only press the trigger in like half way. Anything to get the drill to turn slowly enough to were it will cut but not lock up. Hope this helps.

Discover Cobalt Drill On eBay Below:

5Pcs HSS CO High Speed Steel M35 Cobalt 4 5 6 8 10mm Drill Bit Tool Set
5Pcs HSS CO High Speed Steel M35 Cobalt 4 5 6 8 10mm Drill Bit Tool Set
$6.15
24 1520 TiN Cobalt 135 Split Point Jobber Length Drill YG 1 D2GP187233
24 1520 TiN Cobalt 135 Split Point Jobber Length Drill YG 1 D2GP187233
$9.60
105mm HSSCo8 COBALT HEAVY DUTY STUB DRILL EUROPA TOOL OSBORN 8205021050 P136
105mm HSSCo8 COBALT HEAVY DUTY STUB DRILL EUROPA TOOL OSBORN 8205021050 P136
$9.83
5 x 31mm HSSCo8 COBALT HEAVY DUTY JOBBER DRILL EUROPA OSBORN 8207020310 P198
5 x 31mm HSSCo8 COBALT HEAVY DUTY JOBBER DRILL EUROPA OSBORN 8207020310 P198
$9.89
2 x 55mm HSSCo8 LONG SERIES COBALT DRILL EUROPA TOOL OSBORN 8209020550 P218
2 x 55mm HSSCo8 LONG SERIES COBALT DRILL EUROPA TOOL OSBORN 8209020550 P218
$9.48
Cobalt HSS Metal Drill Set Professional Cobalt Stainless Steel Twist Drill AT011
Cobalt HSS Metal Drill Set Professional Cobalt Stainless Steel Twist Drill AT011
$67.98
Dormer 20mm Coolant Through Cobalt Jobber Drill Bit ADX A554 Brand New
Dormer 20mm Coolant Through Cobalt Jobber Drill Bit ADX A554 Brand New
$35.00
PRECISION TAPER LENGHT M51C 5 16X6 COBALT DRILL BIT W TAG 051320 6PK
PRECISION TAPER LENGHT M51C 5 16X6 COBALT DRILL BIT W TAG 051320 6PK
$50.00
175mm HSSCo8 COBALT HEAVY DUTY STUB DRILL EUROPA TOOL OSBORN 8205020175 P10
175mm HSSCo8 COBALT HEAVY DUTY STUB DRILL EUROPA TOOL OSBORN 8205020175 P10
$5.98
3 x 175mm HSSCo8 COBALT HEAVY DUTY STUB DRILL EUROPA OSBORN 8205020175 P10
3 x 175mm HSSCo8 COBALT HEAVY DUTY STUB DRILL EUROPA OSBORN 8205020175 P10
$7.37
2 x 3 16 476mm HSSCo8 COBALT HEAVY DUTY JOBBER DRILL EUROPA TOOL OSBORN R12
2 x 3 16 476mm HSSCo8 COBALT HEAVY DUTY JOBBER DRILL EUROPA TOOL OSBORN R12
$7.18
2pcs 17 64 TiN Coated Cobalt 130 Point Parabolic Jobber Drill YG 1 DLGP511017
2pcs 17 64 TiN Coated Cobalt 130 Point Parabolic Jobber Drill YG 1 DLGP511017
$6.12
2pcs 19 64 TiN Coated Cobalt 130 Point Parabolic Jobber Drill YG 1 DLGP511019
2pcs 19 64 TiN Coated Cobalt 130 Point Parabolic Jobber Drill YG 1 DLGP511019
$7.52
3 8 TiN Coated Cobalt 130 Point Parabolic Jobber Drill YG 1 DLGP511024
3 8 TiN Coated Cobalt 130 Point Parabolic Jobber Drill YG 1 DLGP511024
$5.82
2pcs 5 16 TiN Coated Cobalt 130 Point Parabolic Jobber Drill YG 1 DLGP511020
2pcs 5 16 TiN Coated Cobalt 130 Point Parabolic Jobber Drill YG 1 DLGP511020
$8.22
3pcs 7 32 TiN Coated Cobalt 130 Point Parabolic Jobber Drill YG 1 DLGP511014
3pcs 7 32 TiN Coated Cobalt 130 Point Parabolic Jobber Drill YG 1 DLGP511014
$7.23
Lot of 12 Cobalt SM Length Drills 340 mm PRECISION Twist Drills USA Made
Lot of 12 Cobalt SM Length Drills 340 mm PRECISION Twist Drills USA Made
$19.00
13mm 2 pc TWIST Drill bits Metric COBALT HSC HSCO 130 mm 2 piece set NEW
13mm 2 pc TWIST Drill bits Metric COBALT HSC HSCO 130 mm 2 piece set NEW
$13.70
3 x 275mm HSSCo8 COBALT HEAVY DUTY JOBBER DRILL EUROPA OSBORN 8207020275 P202
3 x 275mm HSSCo8 COBALT HEAVY DUTY JOBBER DRILL EUROPA OSBORN 8207020275 P202
$8.05
3pcs 1 2280 TiN Coated Cobalt 130 Point Parabolic Jobber Dril
3pcs 1 2280 TiN Coated Cobalt 130 Point Parabolic Jobber Dril
$8.46
5pcs 17 1730 TiN Coated Cobalt 130 Point Parabolic Jobber Drill YG 1
5pcs 17 1730 TiN Coated Cobalt 130 Point Parabolic Jobber Drill YG 1
$9.90
5pcs 18 1695 TiN Coated Cobalt 130 Point Parabolic Jobber Drill YG 1
5pcs 18 1695 TiN Coated Cobalt 130 Point Parabolic Jobber Drill YG 1
$8.30
5pcs 19 1660 TiN Coated Cobalt 130 Point Parabolic Jobber Drill YG 1
5pcs 19 1660 TiN Coated Cobalt 130 Point Parabolic Jobber Drill YG 1
$8.30
3pcs 2 2210 TiN Coated Cobalt 130 Point Parabolic Jobber Drill YG 1
3pcs 2 2210 TiN Coated Cobalt 130 Point Parabolic Jobber Drill YG 1
$8.46
5pcs 20 1610 TiN Coated Cobalt 130 Point Parabolic Jobber Drill YG 1
5pcs 20 1610 TiN Coated Cobalt 130 Point Parabolic Jobber Drill YG 1
$8.30
5pcs 21 1590 TiN Coated Cobalt 130 Point Parabolic Jobber Drill YG 1
5pcs 21 1590 TiN Coated Cobalt 130 Point Parabolic Jobber Drill YG 1
$8.15
5pcs 25 1495 TiN Coated Cobalt 130 Point Parabolic Jobber Drill YG 1
5pcs 25 1495 TiN Coated Cobalt 130 Point Parabolic Jobber Drill YG 1
$7.45
3pcs 3 2130 TiN Coated Cobalt 130 Point Parabolic Jobber Drill YG 1
3pcs 3 2130 TiN Coated Cobalt 130 Point Parabolic Jobber Drill YG 1
$7.71
5pcs 33 1130 TiN Coated Cobalt 130 Point Parabolic Jobber Drill YG 1
5pcs 33 1130 TiN Coated Cobalt 130 Point Parabolic Jobber Drill YG 1
$7.05
3pcs 4 2090 TiN Coated Cobalt 130 Point Parabolic Jobber Drill YG 1
3pcs 4 2090 TiN Coated Cobalt 130 Point Parabolic Jobber Drill YG 1
$7.71
5pcs 45 0820 TiN Coated Cobalt 130 Point Parabolic Jobber Drill YG 1
5pcs 45 0820 TiN Coated Cobalt 130 Point Parabolic Jobber Drill YG 1
$7.05
5pcs 46 0810 TiN Coated Cobalt 130 Point Parabolic Jobber Drill YG 1
5pcs 46 0810 TiN Coated Cobalt 130 Point Parabolic Jobber Drill YG 1
$7.05
3pcs 5 2055 TiN Coated Cobalt 130 Point Parabolic Jobber Drill YG 1
3pcs 5 2055 TiN Coated Cobalt 130 Point Parabolic Jobber Drill YG 1
$7.71
5pcs 9 1960 TiN Coated Cobalt 130 Point Parabolic Jobber Drill YG 1
5pcs 9 1960 TiN Coated Cobalt 130 Point Parabolic Jobber Drill YG 1
$11.35
6mm 2 pieces SHIPS FROM USA Drill bits Metric COBALT SPLIT POINT TIP hsc hsco
6mm 2 pieces SHIPS FROM USA Drill bits Metric COBALT SPLIT POINT TIP hsc hsco
$5.99
01 075 016 M35 Cobalt Parabolic Screw Machine Length Twist Drills Drill Point
01 075 016 M35 Cobalt Parabolic Screw Machine Length Twist Drills Drill Point
$7.21
40160040035 Spirec Cobalt Micro Center Drills Size  35mm Tool Material Coba
40160040035 Spirec Cobalt Micro Center Drills Size 35mm Tool Material Coba
$84.14
15 32in Cobalt Drill Bit
15 32in Cobalt Drill Bit
$14.91
Chicago Latrobe Drill Bits size 5  02055 Cobalt Lot of 2 New
Chicago Latrobe Drill Bits size 5 02055 Cobalt Lot of 2 New
$7.65

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